20th Century

(1900- 1999)

Europe

1843 - 1910
1891 - 1914
1914
1914
7/28/1914 - 11/11/1918
1917
1917
Feb. 1917
1/1918
1968
1973 - 1987

USA

1863 - 1947
12/17/1903
1908 - 1927
1930 - 1939
1933
1960